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Materials 2018, 11(7), 1209; https://doi.org/10.3390/ma11071209

Hydrolytic Hydrogen Production on Al–Sn–Zn Alloys Processed by High-Pressure Torsion

1
School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
2
WPI, International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka 819-0395, Japan
3
Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University, Fukuoka 819-0395, Japan
*
Author to whom correspondence should be addressed.
Received: 7 June 2018 / Revised: 8 July 2018 / Accepted: 11 July 2018 / Published: 13 July 2018
(This article belongs to the Section Energy Materials)
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Abstract

Aluminium-tin-based alloys with different compositions were synthesized by a high-pressure torsion (HPT) method. The effect of different alloying elements and processing routes on the hydrogen generation performance of the alloys was investigated. The results show that Zn can enhance the hydrogen generation rate and yield by promoting pitting corrosion. The highest reactivity in water was achieved for an Al-30wt %Sn-10wt %Zn alloy. Detailed analysis of the Al-30wt %Sn-10wt %Zn alloy shows that increasing the shear strain and the resultant formation of ultrafine grains and phase mixing enhance the hydrogen generation rate through the effects of both nanogalvanic cells and pitting corrosion. View Full-Text
Keywords: hydrogen production; ultrafine-grained (UFG) structure; high-pressure torsion (HPT); severe plastic deformation (SPD); hydrolysis hydrogen production; ultrafine-grained (UFG) structure; high-pressure torsion (HPT); severe plastic deformation (SPD); hydrolysis
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Zhang, F.; Edalati, K.; Arita, M.; Horita, Z. Hydrolytic Hydrogen Production on Al–Sn–Zn Alloys Processed by High-Pressure Torsion. Materials 2018, 11, 1209.

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